10. Freedman, Ronald, and T. H. Sun, "Taiwan: Fertility Trends in a Critical Period of Transition," Studies in Family Planning., August 1969. pp. 15-19. 11. National Academy of Sciences, The Growth of World Population. Wash- ington, D.C., 1963, p. 14. 12. Arriaga, Eduardo E., and Kingsley Davis, "The Pattern of Mortality Change in Latin America," Demography., August 1969. pp. 223-242. 13. Kuczynski, Robert R., The Balance of Births and Deaths. Vol. I, Western and Northern Europe, New York: Macmillan, 1928; Vol. II, Eastern and Southern Europe, Washington, D.C.: The Brookings Institution, 1931. 14. Bunle, Henri, Le Mouvement Naturel de la Population dans le Monde de 1906 a 1936. Paris: L'Institut National d'Etudes Demographiques, 1954. 15. Coale, Ansley J., and Melvin Zelnik, New Estimates of Fertility and Population in the United States. Princeton, N.J.: Princeton Univ. Press, 1963. 16. Kuczynski, Robert R., Measurement of Population Growth: Methods and Results. New York: Oxford Univ. Press, 1936. 17. United Nations, Demographic Yearbook, 1965 and later issues. New York. 18. Murumatsu, Minoru, ed., Japan's Experience in Family Planning—Past and Present. Tokyo: Family Planning Federation of Japan, Inc., 1967. 19. Vasquez, Jose L., "Fertility Decline in Puerto Rico: Extent and Causes," Demography, 1968. pp. 855-865. 20. United Nations, World Population Prospects, 1965-85 as Assessed in 1968. Population Division Working Paper No. 30. New York: December 1969. 21. Kirk, Dudley, Europe's Population in the Interwar Years. The Hague: League of Nations, 1946. Ch. 9, Appendix 2.reatest precisely in those countries economically least well-equipped to absorb the increase in numbers.